Marine Weather Statement for Black River To Ontonagon MI; Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park
Official alert fields
What you need to know
- Applies to
- Black River To Ontonagon MI, Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park
- Effective
- Ended
- Official severity
- Minor
- Official urgency
- Expected
- Official certainty
- Observed
What is happening
The areas affected include... Black River To Ontonagon MI... Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park... At 441 AM EDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30...
What the bulletin says to do
Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes.
Full official description
Bulletin details
The areas affected include... Black River To Ontonagon MI... Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park... At 441 AM EDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots and small hail. This thunderstorm was located 18 nm southwest of The Western Lake Superior Buoy, moving southeast at 30 knots.
Lifecycle record
Official revisions
- Alert
Marine Weather Statement issued July 30 at 4:42AM EDT by NWS Marquette MI
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Marquette MI. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Alert
- Last collected